Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

kozea/cairosvg

              main @ 0613641
            

Fixes

CVEs

CRITICAL

Peak severity

Highlights

SSRF: 2 prior fixes. Scrutinize any change in this area.

cairosvg/parser.py: most-fixed (2 issues). Treat as high-risk during review.

3 high-severity fixes in this history; regressions here are high-impact.

Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

SSRF: Attackers can bypass safe-mode restrictions to fetch local files or external resources via SVG components unless fetching is strictly limited to data: URIs or disabled entirely when not in unsafe mode.

Sandbox Escape: Wrapper APIs like svg2ps may fail to propagate safety-critical parameters (such as the 'unsafe' flag) to the underlying converters, resulting in silent security-control bypasses and default SSRF/XXE risks.

Denial of Service: Recursive XML structures using the <use> tag can trigger exponential element amplification, leading to CPU resource exhaustion when processing maliciously crafted SVG files.